Web sites now exist that can help you identify unknown "drifters" and even predict the time of the next pass of the ISS visible from your location.

这个网站可以帮助你识别不明的漂移物，以及预测你所在的地方下一次可以看到国际空间站掠过的准确时间。

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Remember that the AST classes aren't visible outside of this package at all and that clients will (eventually) simply pass in a String representation of the expression they want evaluated.

要记住AST类在包外是不可见的， 还有就是客户机（最终）只会传入它们想求值的表达式的一个字符串表示。

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When rendered, the image looks like this. You can notice that those four lights make the scene look flat. Later I'll use an ambient occlusion pass to make small details more visible.

当渲染后，你发现四盏平行光使场景看上去很平，等一会我使用一个环境光阻塞效果来加一点细节。

youdao

When rendered, the image looks like this. You can notice that those four lights make the scene look flat. Later I'll use an ambient occlusion pass to make small details more visible.

当渲染后，你发现四盏平行光使场景看上去很平，等一会我使用一个环境光阻塞效果来加一点细节。

youdao